Area under the receiver operating curve showing 0 Area under the receiver operating curve showing 0.84 prediction for irritable bowel syndrome versus inflammatory bowel disease using cut-off at 50 μg/g. Area under the receiver operating curve showing 0.84 prediction for irritable bowel syndrome versus inflammatory bowel disease using cut-off at 50 μg/g. A Dhaliwal et al. Frontline Gastroenterol 2015;6:14-19 Copyright © BMJ Publishing Group Ltd & British Society of Gastroenterology. All rights reserved.